212022111021 has 8 divisors (see below), whose sum is σ = 323081312064. Its totient is φ = 121155492000.

The previous prime is 212022111013. The next prime is 212022111053. The reversal of 212022111021 is 120111220212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212022111021 - 2³ = 212022111013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022111071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5048145480 + ... + 5048145521.

It is an arithmetic number, because the mean of its divisors is an integer number (40385164008).

Almost surely, 2^212022111021 is an apocalyptic number.

212022111021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212022111021 is a deficient number, since it is larger than the sum of its proper divisors (111059201043).

212022111021 is a wasteful number, since it uses less digits than its factorization.

212022111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096291011.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212022111021 its reverse (120111220212), we get a palindrome (332133331233).

The spelling of 212022111021 in words is "two hundred twelve billion, twenty-two million, one hundred eleven thousand, twenty-one".